公比为2的等比数列{an}的各项都是正数,且a3a11=16,则a5=_____

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问题:

公比为2的等比数列{an}的各项都是正数,且a3a11=16,则a5=________.

考点:等比数列的定义及性质
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院内普通会诊及急会诊时限是多少?

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每一眼眶内外壁所成的角度约为()

A.30°

B.45°

C.60°

D.90°

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Clean Ltd was established some five years ago to manufacture industrial solvents and cleaning solutions, and Des was appointed managing director.The company’s main contract was with Dank plc a large industrial conglomerate.In the course of its research activity, Clean Ltd’s scientists developed a new super glue. Des was very keen to pursue the manufacture of the glue but the board of directors overruled him and decided that the company should stick to its core business.The managing director of Dank plc is a friend of Des’s and has told him that Dank plc will not be renewing its contract with Clean Ltd as he is not happy with its performance. He also told Des that he would be happy to continue to deal with him, if only he was not linked to Clean Ltd.Following that discussion Des resigned from his position as managing director of Clean Ltd and set up his own company, Flush Ltd which later entered into a contract with Dank plc to replace Clean Ltd. Flush Ltd also manufactures the new glue discovered by Clean Ltd’s scientists, which has proved to be very profitable.Required:In the context of company law, advise the board of Clean Ltd as to whether they can take any action against Des or Flush Ltd. (10 marks)

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国家预算的作用是国家预算职能在经济生活中的具体体现,主要包括()。

A.财力保证作用

B.调节制约作用

C.计划执行作用

D.反映监督作用

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当暖湿空气流经冷的下垫面时,下垫面的冷却作用使空气达到过饱和、发生凝结而形成的雾称为()

A.辐射雾

B.平流雾

C.蒸汽雾

D.锋面雾

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